For many years Nielsen Media Research used diaries to measure TV viewership. However, today TV ratings are gathered exclusively by having small electronic sensors sewn just beneath the skin on the wrists of panel members. The sensors record all TV signals to which panel members are exposed.

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This statement is false. Nielsen Media Research still uses various methods to gather TV ratings, including electronic meters that are connected to each TV set in a panel member's home and track the viewing habits of everyone in the household. They do not use sensors that are sewn beneath the skin.

For Many Years Nielsen Media Research Used Diaries to Measure